Tamper-Evident Container Hinge for Visible Opening Detection

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Solution Overview

Problem

Existing containers lack effective tamper-evident features that visually indicate if the container has been opened, while maintaining ease of use and reusability.

Innovation Solution

A tamper-evident container design featuring a flexible hinge with a line of weakness and a tamper evidence tab, allowing the lid to be easily separated from the base, indicating tampering by breaking along the line of weakness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional hinge design is used to allow easy lid removal and replacement, then ease of operation is improved, but tamper evidence capability is lost

Engineering Contradiction:

Improvelid removal and replacementVSAvoidtamper evidence capability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The hinge is divided into multiple segments with designated break lines, allowing the hinge to be separated into distinct portions. This segmentation enables the hinge to provide tamper evidence through visible separation while maintaining the functional capability of lid removal and replacement through the flexible hinge mechanism.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A tab element is introduced as an intermediary component that connects the hinge segments. The tab serves as a visual indicator of tampering when the hinge is separated, while still allowing the hinge to function properly for opening and closing the lid through the flexible connection points.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a tamper evidence feature is added to the container, then tamper evidence capability is improved, but device complexity increases

Engineering Contradiction:

Improvetamper evidence capabilityVSAvoidhinge structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The tamper evidence feature is merged with the hinge structure itself rather than being a separate component. The break lines and tab elements are integrated into the hinge design, allowing the hinge to simultaneously provide both its functional purpose and tamper evidence capability without adding external complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The tab element changes its visual state (positioning itself in different locations) to indicate tampering. When the hinge is intact, the tab is in one position; when the hinge is separated, the tab moves to indicate tampering, providing clear visual evidence without complex mechanisms.

Inventive Principle:

Principle #32Color changes

3Ease of operation

If the hinge is made flexible to allow easy opening, then ease of operation is improved, but structural strength is reduced

Engineering Contradiction:

Improvelid openingVSAvoidhinge connection

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

The hinge has different local properties: flexible sections that allow easy opening and closing motion, and rigid sections with break lines that provide structural strength and tamper evidence. The tab element is positioned in specific locations to maintain strength where needed while allowing flexibility where required for operation.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250320038A1Container having a tamper evident hinge

Publication Date: 2025.10.16 PINNPACK PACKAGING LLC

AI summary

A circular tamper-resistant container with tamper evident feature which includes a circular base and a circular lid joined by a flexible hinge having a tamper evident tab, the base and a lid are hingedly connected to each other via a hinge part with a tamper evident tab in the closed state.